From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yevgeny Kliteynik Subject: Re: [PATCH v3] opensm: support routing engine update Date: Sun, 14 Feb 2010 14:38:54 +0200 Message-ID: <4B77EEDE.4090503@dev.mellanox.co.il> References: <4AED461B.5040302@Voltaire.COM><4B1BD5B6.6000005@dev.mellanox.co.il><39C75744D164D948A170E9792AF8E7CA01F6FA2F@exil.voltaire.com> <4B1CBB34.6070708@dev.mellanox.co.il> <39C75744D164D948A170E9792AF8E7CA01F6FA30@exil.voltaire.com> <4B77CDD8.2040900@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4B77CDD8.2040900-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "Eli Dorfman (Voltaire)" Cc: Slava Strebkov , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org On 14/Feb/10 12:18, Eli Dorfman (Voltaire) wrote: > Slava Strebkov wrote: >> HI! >> That was my misunderstanding - upon heavy sweep SM will try to load >> routing engines as defined in the SM.conf file (ftree& updn - in that >> order). >> So ftree will be loaded when switch comes back from reboot. >> >> Slava >> >> -----Original Message----- >> From: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org >> [mailto:linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org] On Behalf Of Yevgeny Kliteynik >> Sent: Monday, December 07, 2009 10:22 AM >> To: Slava Strebkov >> Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org >> Subject: Re: [PATCH v3] opensm: support routing engine update >> >> Slava, >> >> Slava Strebkov wrote: >>> Hi Yevgeny, >>> In that case SM will use updn and will not come back to ftree >>> automatically. >> >> I think that this is a bad thing. >> >> I wouldn't want *temporary* change of fabric to cause >> *permanent* change of SM mode of operation. Such changes >> do happen, and I'd prefer SM to continue functioning >> in accordance to the user's configuration once the >> fabric is settled again. >> >> I do see the cases were the change that you propose is >> beneficial - if fabric topology doesn't fits the chosen >> routing, SM will waste time on retrying the wrong routing >> at every heavy sweep, but this happens due to suboptimal >> SM configuration and not as a result of some event that >> user has no control of. > > For every heavy sweep the SM will try to configure the routing engines as specified in the conf file. > So when a switch goes up and ftree configuration is valid, the SM will configure ftree instead of updn. OK then, sounds good. -- Yevgeny -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html